CVE-2026-93689

Katalog CVE

CVSS 5.5 · Medium EPSS 0,15%

Kerentanan NULL Pointer Dereference. Skor CVSS 3.1 5.5 (Medium) menurut vulncheck.com.

Deskripsi (NVD)

WinFsp through 2.2.26215 contains a null pointer dereference vulnerability in the kernel driver's Fast I/O device control handler that fails to validate the volume context before use. An unprivileged local user can trigger a denial of service by opening the WinFsp control device and issuing FSP_IOCTL_TRANSACT requests, causing a system crash.

Rincian

Terbit di NVD

18 September 2026

Terakhir diubah

22 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

5.5 (Medium), sumber vulncheck.com
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-476: NULL Pointer Dereference

EPSS (30 hari)

0,15% peluang dieksploitasi; lebih tinggi dari 4,0% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/winfsp/winfsp
• https://github.com/winfsp/winfsp/blob/v2.2B4/src/sys/devctl.c#L105-L114
• https://github.com/winfsp/winfsp/blob/v2.2B4/src/sys/devctl.c#L146-L152
• https://github.com/winfsp/winfsp/blob/v2.2B4/src/sys/devctl.c#L68-L73
• https://github.com/winfsp/winfsp/blob/v2.2B4/src/sys/volume.c#L1059-L1060
• https://github.com/winfsp/winfsp/commit/b8103265ec63fa87ac264c62bb796dbc38376652
• https://github.com/winfsp/winfsp/releases/tag/v2.2B4
• https://www.vulncheck.com/advisories/winfsp-through-2.2.26215-null-pointer-dereference-via-fast-i-o